This read-only Counter64 counts the total number of received IGMP queries this PM instance discarded, for any reason. Admins treat it as a rollup alarm — a nonzero value means one of the specific reason-coded QueryDiscards counters on this same instance is climbing and worth checking individually; because it is drawn from the lifetime bin, which keeps accumulating until an operator explicitly clears it, a sudden plateau on an otherwise busy instance is itself a signal — most likely that someone cleared the stats rather than that traffic actually stopped. On a subscriber-facing IPTV access port, a count of 950 over the 58 days since the counters were last cleared is the kind of number an admin would trend against the join/leave rate on the same port to judge whether it's normal channel-surfing or an anomaly worth a closer look.